fix: action event double parse

Author: ryanatkn

.changeset/chatty-cups-jam.md

@@ -0,0 +1,5 @@
+---
+'@fuzdev/fuz_app': patch
+---
+
+fix: action event double parse

src/lib/actions/action_event.ts

@@ -126,6 +126,15 @@ export class ActionEvent<
 			return this;
 		}
 
+		// Input already validated in predecessor phase — skip re-parsing
+		if (
+			this.#data.kind === 'request_response' &&
+			(this.#data.phase === 'receive_response' || this.#data.phase === 'send_response')
+		) {
+			this.#transition_step('parsed');
+			return this;
+		}
+
 		const parsed = this.spec.input.safeParse(this.#data.input);
 		if (parsed.success) {
 			this.#transition_step('parsed', {input: parsed.data});

src/routes/library.json

@@ -1291,7 +1291,7 @@
 						"name": "create_action_event",
 						"kind": "function",
 						"doc_comment": "Create an action event from a spec and initial input.",
-						"source_line": 452,
+						"source_line": 461,
 						"type_signature": "<TMethod extends string = string>(environment: ActionEventEnvironment, spec: { method: string; initiator: \"frontend\" | \"backend\" | \"both\"; side_effects: boolean; input: ZodType<unknown, unknown, $ZodTypeInternals<...>>; ... 4 more ...; async: true; } | { ...; } | { ...; }, input: unknown, initial_phase?: \"send_request\" | ... 8 more ... | undefined): ActionEvent<...>",
 						"return_type": "ActionEvent<TMethod, \"send_request\" | \"receive_request\" | \"send_response\" | \"receive_response\" | \"send_error\" | \"receive_error\" | \"send\" | \"receive\" | \"execute\", \"initial\" | \"parsed\" | \"handling\" | \"handled\" | \"failed\">",
 						"parameters": [
@@ -1318,7 +1318,7 @@
 						"name": "create_action_event_from_json",
 						"kind": "function",
 						"doc_comment": "Reconstruct an action event from serialized JSON data.",
-						"source_line": 479,
+						"source_line": 488,
 						"type_signature": "<TMethod extends string = string>(json: ActionEventDataUnion<TMethod>, environment: ActionEventEnvironment): ActionEvent<TMethod, \"send_request\" | ... 7 more ... | \"execute\", \"initial\" | ... 3 more ... | \"failed\">",
 						"return_type": "ActionEvent<TMethod, \"send_request\" | \"receive_request\" | \"send_response\" | \"receive_response\" | \"send_error\" | \"receive_error\" | \"send\" | \"receive\" | \"execute\", \"initial\" | \"parsed\" | \"handling\" | \"handled\" | \"failed\">",
 						"parameters": [
@@ -1335,7 +1335,7 @@
 					{
 						"name": "parse_action_event",
 						"kind": "function",
-						"source_line": 493,
+						"source_line": 502,
 						"type_signature": "(raw_json: unknown, environment: ActionEventEnvironment): ActionEvent<string, \"send_request\" | \"receive_request\" | \"send_response\" | \"receive_response\" | \"send_error\" | \"receive_error\" | \"send\" | \"receive\" | \"execute\", \"initial\" | ... 3 more ... | \"failed\">",
 						"return_type": "ActionEvent<string, \"send_request\" | \"receive_request\" | \"send_response\" | \"receive_response\" | \"send_error\" | \"receive_error\" | \"send\" | \"receive\" | \"execute\", \"initial\" | \"parsed\" | \"handling\" | \"handled\" | \"failed\">",
 						"parameters": [